10440 - cpp-payflow-color value exceeds maximum allowable length.

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10440 - cpp-payflow-color value exceeds maximum allowable length.

Getting this error when attempting to checkout, have Pay Pal Express setup with the proper credentials. Am not able to tick the live mode in the network setup, every time I save it with "Live" ticked it goes back to sandbox mode. I don't have sandbox set up with Pay Pal. Can you guide me to getting the mode to stay as live? Am thinking that should solve the problem.

Thx
Don